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Replacing, Upgrading, or Downgrading an M10i CFEB or CFEB-E

 

One or two CFEBs or CFEB-Es can install into the uppermost slots in the rear of the chassis, as shown in M10i Chassis Description. Only one CFEB or CFEB-E is active at a time, with the optional second CFEB or CFEB-E in reset mode. CFEBs or CFEB-Es are hot-pluggable when you replace a CFEB with a CFEB or a CFEB-E with a CFEB-E, as described in M10i Field-Replaceable Units (FRUs). Upgrading or downgrading a CFEB device requires a system reboot, as described in Upgrading or Downgrading an M10i CFEB or CFEB-E. Removing the standby CFEB or CFEB-E has no effect on router function. If the active CFEB or CFEB-E fails or is removed from the chassis, the effect depends on whether two CFEBs or CFEB-Es are installed:

  • If there is only one CFEB or CFEB-E, forwarding halts until the CFEB or CFEB-E is replaced and functioning again.

  • If there are two CFEBs or CFEB-Es, forwarding halts until the standby CFEB or CFEB-E boots and becomes active.

In both cases, all components in the Packet Forwarding Engine reset, and it takes approximately 1 minute for the new CFEB or CFEB-E to become active; synchronizing router configuration information can take additional time, depending on the complexity of the configuration.

Removing an M10i CFEB or CFEB-E

To remove a CFEB or CFEB-E (see Figure 1):

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
  2. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  3. If you are removing the active SIB or CFEB-E, press and hold the online/offline button on the faceplate until the yellow LED labeled FAIL lights, which takes about 5 seconds.

    (The effect of removing the active SIB or CFEB-E depends on whether a second SIB or CFEB-E is installed.

  4. Loosen the thumbscrew on each ejector lever, using a Phillips screwdriver if necessary.
  5. Pull the end of each ejector lever outward until it is nearly perpendicular to the CFEB or CFEB-E faceplate.
  6. Grasp the ejector levers and pull firmly to slide the CFEB or CFEB-E about halfway out of the chassis.
  7. Place one hand under the CFEB or CFEB-E to support it, slide it completely out of the chassis, and place it on the antistatic mat or in the electrostatic bag.Caution

    When a CFEB or CFEB-E is out of the chassis, do not hold it by the ejector levers. They cannot support its weight.

    Do not stack CFEBs or CFEB-Es on top of or under other components. Place each one individually in an electrostatic bag or on its own antistatic mat on a flat, stable surface.

Figure 1: Removing a CFEB or CFEB-E
Removing a CFEB or
CFEB-E

Installing an M10i CFEB or CFEB-E

To install a CFEB or CFEB-E (see Figure 2):

  1. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  2. Verify that the ends of the ejector levers are pulled outward to a position nearly perpendicular to the faceplate of the CFEB or CFEB-E.
  3. Place one hand under the CFEB or CFEB-E to support it and grasp one of the ejector levers at the front with the other hand.
  4. Align the rear of the CFEB or CFEB-E with the guides inside the chassis and slide it in completely.
  5. Press the ejector lever at each end of the CFEB or CFEB-E inward.
  6. Tighten the thumbscrew on each ejector lever (shown in M10i CFEB and CFEB-E LEDs) to seat the CFEB or CFEB-E firmly in the chassis.
  7. Press the online/offline button on the CFEB or CFEB-E faceplate and hold it down until the green LED labeled OUTPUT OK lights steadily.

    You can also verify correct CFEB or CFEB-E functioning by issuing the show chassis cfeb commands described in Maintaining the M10i CFEB and CFEB-E.

Figure 2: Installing a CFEB or CFEB-E
Installing a CFEB
or CFEB-E

Upgrading or Downgrading an M10i CFEB or CFEB-E

To upgrade by replacing a CFEB with a CFEB-E or downgrade by replacing a CFEB-E with a CFEB requires a system reboot after swapping the CFEB devices.

To upgrade from a CFEB to a CFEB-E or to downgrade from a CFEB-E to a CFEB:

  1. Remove the CFEB or CFEB-E as described in Removing an M10i CFEB or CFEB-E.
  2. Install the upgrade CFEB-E or downgrade CFEB as described in Installing an M10i CFEB or CFEB-E.
  3. Reboot the router:
    • If the router has only one routing engine, issue the CLI command

      user@host> request system reboot
    • If the router has two routing engines (a primary routing engine and a backup routing engine), from the primary routing engine issue the following two CLI commands in immediate succession to force the router to reboot:

      user@host> request system reboot other-routing-engine
      user@host> request system reboot

After the reboot, the router recognizes the new CFEB or CFEB-E.